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VFD Installation in AHU Plenums Technical Note

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This technical note reviews best practices for mounting variable frequency drives (VFDs) in air handler unit (AHU) plenums, specifically within supply air, return air, and exhaust air sections. It addresses environmental challenges such as coil blow-off, condensation, humidity, vibration, and airflow, while providing recommendations for drive placement, access, and wiring to ensure reliable operation.

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